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SperaxOS CoinGecko Market Chart API
x402
SperaxOS CoinGecko Market Chart API is a paid API for AI agents from chat.sperax.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-03).
Fetches historical price, market cap, and volume chart data for a given cryptocurrency over a specified number of days via CoinGecko, payable per-request with USDC on Base.
Price / call$0.001
Success—
StatusUnknown
How this service works
AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.
Output
Returns a time series of historical price, market cap, and total volume data points for the specified coin over the given number of days, as sourced from CoinGecko. Each data point is typically a [timestamp, value] pair.
Example use cases
Crypto price trend analysis
“Show me the price history for ethereum over the last 90 days — I want to see how it's trended.”
DeFi token market research
“Get me the market chart data for uniswap from CoinGecko for the past 7 days, including volume and market cap.”
Historical volatility check
“Pull the last 365 days of price and volume data for solana so I can analyze how volatile it's been over the past year.”
Technical details
Endpoint
POSThttps://chat.sperax.io/api/x402/tools/coingecko/getMarketChart?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need historical price, market cap, or volume chart data for a specific cryptocurrency without managing API keys — ideal for DeFi agents that already hold USDC on Base and want pay-per-use access to CoinGecko data. Prefer this over direct CoinGecko API calls when operating in a keyless, on-chain payment environment.
Side effects
- Invalid coinId returns an error or empty result — must use CoinGecko's exact coin ID (e.g. 'bitcoin', not 'BTC')
- Payment failure if the caller's USDC balance on Base is insufficient
- Days parameter out of supported range may return partial or error response
- Rate limiting or upstream CoinGecko API downtime causing 5xx errors
- Malformed request body missing required coinId field
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| days | number | Number of days of history (e.g. 1, 7, 30, 90, 365). Default: 7. |
| coinId | string | CoinGecko coin ID (e.g. "bitcoin"). |
Tags
x402
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